I read the article and you are correct, it is interesting stuff, Slava. It did lead me on to another curious word, (which is the subject of the article listed below), 'mithridatism', especially since I am a 'Princess Bride' fan from way back!

A renowned expert on venomous snakes, Bill Haast, owes his life to Mithridatism. See excerpt from Wikipedia article:

"Soon after opening the Serpentarium Haast began experimenting with building up an acquired immunity to the venom of King, Indian and Cape cobras by injecting himself with gradually increasing quantities of venom he had extracted from his snakes, a practice called Mithridatism." For the full article go to http://en.wikipedia.org/wiki/Bill_Haast)

The signature landmark of the Serpentarium-- a huge concrete King Cobra in an "S" strike position-- has hung over Dixie Highway and my imagination for many years.